125903131 has 8 divisors (see below), whose sum is σ = 127303344. Its totient is φ = 124508160.

The previous prime is 125903111. The next prime is 125903147. The reversal of 125903131 is 131309521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125903131 - 2⁹ = 125902619 is a prime.

It is a super-2 number, since 2×125903131² = 31703196791206322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125903096 and 125903105.

It is not an unprimeable number, because it can be changed into a prime (125903111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64236 + ... + 66166.

It is an arithmetic number, because the mean of its divisors is an integer number (15912918).

Almost surely, 2^125903131 is an apocalyptic number.

125903131 is a deficient number, since it is larger than the sum of its proper divisors (1400213).

125903131 is a wasteful number, since it uses less digits than its factorization.

125903131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2621.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 125903131 is about 11220.6564424725. The cubic root of 125903131 is about 501.2012861783.

The spelling of 125903131 in words is "one hundred twenty-five million, nine hundred three thousand, one hundred thirty-one".